i am lucky enough to have a job offer and will be going for house hunting in June. I feel like contacting some of the faculty members that i met during my on-campus visit but also can't decide who are the "right people" i should contact. i guess i "must" meet the department chair and the search chair; should i also contact other faculty members as well?

Congrats on your offer! In my department, whenever a new hire visits for the house hunting trip, we have a departmental dinner that the department chair organizes. You may want to start by informing the search and department chairs that you are going to visit, and see if they set something up. If they seem not to have the same tradition my department has, then by all means contact whomever in the department you think you would enjoy getting together with—particularly people with whom you may collaborate or work closely (e.g., in your area within a larger department). Have fun!